20372355651516 has 48 divisors (see below), whose sum is σ = 51878907319680. Its totient is φ = 6170821817920.

The previous prime is 20372355651509. The next prime is 20372355651547. The reversal of 20372355651516 is 61515655327302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32428806 + ... + 33051053.

It is an arithmetic number, because the mean of its divisors is an integer number (1080810569160).

Almost surely, 2^{20372355651516} is an apocalyptic number.

It is an amenable number.

20372355651516 is an abundant number, since it is smaller than the sum of its proper divisors (31506551668164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20372355651516 is a wasteful number, since it uses less digits than its factorization.

20372355651516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65482234 (or 65482232 counting only the distinct ones).

The product of its (nonzero) digits is 5670000, while the sum is 51.

The spelling of 20372355651516 in words is "twenty trillion, three hundred seventy-two billion, three hundred fifty-five million, six hundred fifty-one thousand, five hundred sixteen".